1a. The vapor pressure of liquid methanol, CH3OH, is 100. mm Hg
at 294 K. A 0.104 g sample of liquid CH3OH is placed in a closed,
evacuated 430. mL container at a temperature of 294 K. Assuming
that the temperature remains constant, will all of the liquid
evaporate? (Yes or No) What will the pressure in the container
be when equilibrium is reached? ____ mm Hg
1b. The vapor pressure of liquid ethyl
amine, C2H5NH2,
is 100. mm Hg
at 248 K.
A sample
of C2H5NH2 is
placed in a closed, evacuated 522 mL
container at a temperature of 248 K. It
is found that all of
the C2H5NH2 is
in the vapor phase and that the pressure
is 60.0 mm Hg. If the volume of the
container is reduced to 385 mL at
constant temperature, which of the following statements are
correct?
Choose all that apply.
Liquid ethyl amine will be present.
No condensation will occur.
Some of the vapor initially present will condense.
Only ethyl amine vapor will be present.
The pressure in the container will be 100. mm Hg.
1c. The vapor pressure of liquid ethyl
amine, C2H5NH2,
is 40.0 mm Hg
at 233 K.
A sample
of C2H5NH2 is
placed in a closed, evacuated container of constant volume at a
temperature of 394 K. It is found that
all of
the C2H5NH2 is
in the vapor phase and that the pressure
is 60.0 mm Hg. If the temperature in the
container is reduced to 233 K, which of
the following statements are correct?
Choose all that apply.
No condensation will occur.
The pressure in the container will be 40.0 mm Hg.
Only ethyl amine vapor will be present.
Liquid ethyl amine will be present.
Some of the vapor initially present will condense.